Light of wavelength 648.0 nm is incident on a narrow slit. the diffraction pattern is viewed on a screen 57.5 cm from the slit. the distance on the screen between the second order minimum and the central maximum is 1.05 cm . what is the width of the slit in micrometers (μm)?
a freight car of mass 20,000 kg moves along a frictionless level railroad track after the push the skateboarder ii moves with a velocity of 2 m/s to after the collision the cars stick to each other and diver jumps with a velocity of 3 m/s in opposite a 10 kg object moves at a constant velocity 2 m/s to the right and collides